Carb

[67 joe dirt]

I installed a new holley carburetor on a 383 the brake booster port is in the back but I don't have power brakes the car runs but when I block off the port it stalls the engine and quits do I need to run it to something else

 

[Don Frelier]

Maybe too rich? Try setting the idle mixture more lean.
You should be able to just cap it off.

 

[67 joe dirt]

Ok ill try that also the it idles about 800rpm with idle screw backed all the way out if that suggests anything else I need to do

 

[Don Frelier]

Make sure the secondaries are completely closed.

 

[67 joe dirt]

Ok ill check everything out i was able to drive it straight out of the box but I'm sure it needs some tuning just didn't know what to do